Richard beaumont thomas



R.- B. THOMAS. DUSTING METAL PLATES v (No Model.)-

No. 501,746. Patented July 18,- 1893.

- WITNESSES;

UNITED STATES PATENT OFFICE.

RICHARD BEAUMONT THOMAS, OF LYDBROOK, ENGLAND.

DUSTING METAL PLATES.

SPECIFICATION forming part of Letters Patent No. 501,746, dated July 18,1893. Application filed June 11, 1890- Serial No. 355,017. (No model.)Patented in England December 8, 1886, No- 16,065.

To all whom it may concern.-

Be it known that I, RICHARD BEAUMONT THOMAS, a subject of the Queen ofGreat Britain and Ireland, and a resident of Lydbrook, in the county ofGloucester, England, have invented certain Improvementsin Dusting MetalPlates or Sheets, (for which I have obtained aBritish patent, datedDecember 8, 1886, No. 16,065,) of which the following is aspecification.

When metal plates or sheets, such for example as tin or ternepl'ates,have been cleaned in any convenient manner, or by any suitableapparatus, they require dusting or polishing.

Now the object of this invention is to provide means for dusting orpolishing metal plates or sheets, whereby this dusting or polishingshall be accomplished very speedily and efiiciently and with little orno danger that the surfaces or edges of the plates or sheets shall beinjured. With this object, between each two pairs of holding or feedingrollers in my apparatus, I mount preferably one pair of dusting rollers,which revolve in the same directions as the holding rollers, but at agreatly increased speed.

In the accompanying drawings, Figure 1 is a transverse vertical sectionof a dusting apparatus according to this my invention. Fig. 2 is anelevation of one end thereof, and Fig. 3 is an elevation of the otherend thereof.

Three pairs of rollers are adjustably mounted in any suitable framing,and the first pair of rollers N N are so revolved as to receive and holdthe plate, and pass it on between the next pair of rollers O O whichpreferably are of a rather larger diameter and are covered withsheepskin or other suitable material. These rollers O O are caused torevolve in the same directions as the rollers N N, but at a speedgreatly increased above that of these rollers N N, preferably aboutthree times as fast, whereby the plate is thoroughly dusted on bothsurfaces, as it is passed on by the rollers N N to the third pair ofrollers P P, which are revolved in the same directions and at the samespeed as the rollers N N and receive the plate therefrom and draw it outfrom between the rollers O 0.

Therefore as the dusting rollers O O are revolved in the same directionsas are the holding or feeding rollers N N and P P, and consequentlytreat and dust or polish the plate in the direction in which it istraveling, there is and can be little or no danger that the surfaces oredges of theplates or sheets shall be injured. The aforesaid differingspeeds may be'given to the rollers in any suitable manner. I show in thedrawings one convenient method in Figs. 2 and 3. The power by which theapparatus is driven is applied to the lower dusting roller 0', and atone end of the apparatus a toothed wheel Q on this roller 0' gears intoalarger toothed wheel R on the roller N, whereon also is a smaller wheelS, which by a band drives a similar wheel T on the roller P. At theother end of the apparatus a toothed wheel U on the roller N gears intoa similar toothed wheel V on the roller N, and a toothed wheel W on theroller P gears into a similar toothed wheel X on the roller P, whilealarger wheel Y on the roller P by a band drives a smaller wheel Z on theroller 0.

I consider that the three pairs of rollers hereinbefore described are ingeneral amply sufficient to dust or polish the plates; but when desiredI can add two or four more pairs of rollers, in every case one of eachtwo pairs of rollers so added being the dusting rollers, the other beingthe holding or feeding rollers; and the dusting rollers will alwaysrevolve in the same directions as the holding or feeding rollers but ata greatly increased speed. 1

I claim as my invention- In an apparatus for dusting or polishing metalplates or sheets, the combination of the two pairs of holding or feedingrollers and intermediate dusting rollers, with driving mechanism forrevolving all the pairs of rollers in the same direction, but thedusting rollers at a much greater speed than the holding or feedrollers, substantially as described. In testimony whereof I have signedmy name to this specification in the presence of two subscribingwitnesses.

RICHARD BEAUMONT THOMAS.

Witnesses:

J AS. HART,

JOSEPH E. MOORES.

